In the docs about print inferior-events we read:
...
By default, these messages will not be printed.
...
That used to be the case, but is no longer so since commit
f67c0c91715 "Enable
'set print inferior-events' and improve detach/fork/kill/exit messages".
Fix this by updating the docs.
The @code{set print inferior-events} command allows you to enable or
disable printing of messages when @value{GDBN} notices that new
inferiors have started or that inferiors have exited or have been
-detached. By default, these messages will not be printed.
+detached. By default, these messages will be printed.
@kindex show print inferior-events
@item show print inferior-events